F-doping of nanostructured ZnO: a way to modify structural, electronic, and 
surface properties

Wolf, Elisabeth; Millet, Marie-Mathilde; Seitz, Friedrich; Redeker, Frenio A.; Riedel, Wiebke; Scholz, Gudrun; Hetaba, Walid; Teschner, Detre; Wrabetz, Sabine; Girgsdies, Frank; Klyushin, Alexander; Risse, Thomas; Riedel, Sebastian; Frei, Elias

doi:10.1039/D0CP00545B

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F-doping of nanostructured ZnO: a way to modify structural, electronic, and surface properties

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Wolf, Elisabeth
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons126976

Millet, Marie-Mathilde
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons241514

Seitz, Friedrich
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons181070

Hetaba, Walid
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

/persons/resource/persons22163

Teschner, Detre
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

/persons/resource/persons22257

Wrabetz, Sabine
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21557

Girgsdies, Frank
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons32779

Klyushin, Alexander
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons104933

Frei, Elias
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Wolf, E., Millet, M.-M., Seitz, F., Redeker, F. A., Riedel, W., Scholz, G., et al. (2020). F-doping of nanostructured ZnO: a way to modify structural, electronic, and surface properties. Physical Chemistry Chemical Physics, 22(20), 11273-11285. doi:10.1039/D0CP00545B.

Cite as: https://hdl.handle.net/21.11116/0000-0006-80E4-7

Abstract

Polycrystalline ZnO is a material often used in heterogeneous catalysis. Its properties can be altered by the addition of dopants. We used gaseous fluorine (F_2(g)) as direct way to incorporate fluoride in ZnO as anionic dopants. Here, the consequences of this treatment on the structural and electronic properties, as well as on the acidic/basic sites of the surface, are investigated. It is shown that the amount of F incorporation into the structure can be controlled by the synthesis parameters (t,T,p). While the surface of ZnO was altered as shown by, e.g., IR spectroscopy, XPS, and STEM/EDX measurements, the F₂ treatment also influenced the electronic properties (optical band gap, conductivity) of ZnO. Furthermore, the Lewis acidity/basicity of the surface was affected which is evidenced by using, e.g., different probe molecules (CO₂, NH₃). In situ investigations of the fluorination process offer valuable insights on the fluorination process itself.